Tractor plow



Sept. 25, 1928.

' 1,685,267 B. R. BENJAMIN TRACTOR PLOW Filed Aug. 9, 1924 f 2 sheet -sheet 1 Sept. 25, 1928.

B. R. BENJAMIN TRACTOR PLOW 2 Sheets$heet -2 Filed Aug. 9. 1924 ,B6$@RB6VWI 4 y I w IT BERT a. BENJAMIN, or OAK ran-K, rumors, assreivoa To m mm HART VESTER COMPANY, or CHICAGO, ILLInoIs, a conronar on oriaewmasm f *rnaoron rLow.

Application filed August 9, 1924. Serial No. 731,104; I p

This invention relates to tractor operated tillage implements and is more particularly directed to combination with acertain type of farm tractor of an implement carrying unit capable of being detached from the tractor when'not wanted.

The main object of the invention is to provide an implement carrying attachmentespecially designed for use with 'tr'actorsofthe type haying a wide arched or raised rear axle structure intended-t0 straddle :two plant rows. Further objects are to construot the attachment with a draft frame so designed t'hat, when combined with the rear of the tractor,

it will reinforce the axle-structure to which it is attached and becapable of carrying two shovel plows ,of the middle breaker/type at proper spacing; also, to provide lateral-ad.- justment for such plow beams on the draft frame and to suspend the plow beams so that they can be lifted and lowered bodily with little'eflort and give ample clearance above the ground when raised.

The foregoing and other m-inorobjects are accomplished by providing a. unit adapted to be attached-to a tractor axle,-the unit comprising a novel construction of draft frame and implement attaching bar, the bar having implementbeams, such as plow beams, secured thereto and the frame being provided with novel adjusting mechanism for lifting and lowering the attaching bar and implement beams, as hereinafter more specifically described and as defined in the claims.

'Referring to the drawings, I Fig. 1 is a plan view showing the rear portion of a tractor with the tillage unit com;- bined therewith; j Fig. 2 is a side view of thestruct-ure in Fig. lwith part of the axle structure of the tractor in section; and

Fig 3 is a detail View, showingthe relation of a draft bracket to the draft bar;

The invention is illustrated in combination with a tractor of the wide tread type comprising'an upwardly arched rear axle structure forming the rear of the tractor frame and comprising a transverse housing containing the differential with lateral shafts :entending. therefrom and depending housings 11 having upper portions fixed to the ends of thetransverse housing and containing gearing driven by the lateral-shafts for dr-ivingthe spindles of the traction wheels 12. The central porconnected by locking tion'of the housing 10c0ntaining the differential carriesthe drivers seat 13, as seen in Fig.2. I

-On the {lower inner portions of eachof the housings 11 there are provided inwardly pro.- jecting cylindrical bosses '14" which servejas supporting elements for a transversely ex-- tending and rearwardly projecting -U-shaped draw bar 15 forming the principal, element of the draft frame. formed from a rigid fiat metal bar with its arms 16 extending at right angles. to its straight transverse bight portion. QOn each of the-arms 16 there is mounted a coupling bracket 17 having a widened rear portion provided with apair of parallel transverse slots 18 receiving fastening bolts 19 which pass through the forward ends of arms 16.

At its forward end each bracket 17 is formed with a split pivot head'QOlFig. 2) formed with a circular opening adapted to receivea boss 1%. The parts of bolt 21. The purpose of the slots 19 in the pivot bracket istoperm-it a bracket to be shifted inwardly when ho'lt's 19 are loosened, thereby releasing the bracket from the boss 14. A suspension link 22am each side ofthe frame connects the rear portion of each arm 16-with a bracket 23 on cas- The bar 15 is preferably the split pivot head are ing llhav-ing aseries of notches 2 1, into any n of which the angularly bent end of link 22 is adapted to be secured, thusproviding means for adjusting the bar 15 angularly. i

. Beneath the forward end ofeach arm 16 of the draft frame there is secured a depending draft bracket 25 preferably formed of a flat bar loo-p ed upon itself to provide a substantially vertical slot or guide way 26, and the endsof'which ar eclamped together-"and tn the arm 16 by means of-the bolts 19 that retain the pivot bracket 17 in position. Each bracket 25 is bracedon the arm 16 by a diagonal, bar 27. A transverse draft bar 28, preferably cylindrical as in the guide-ways 26 of the brackets of. which there. is fastened shown, has its ends engaged 25 and to this .bar there are adjustably secured which is illustrated in*'this:insta-nlce as the beam of amiddle breaker carrying the plow bodyBl. The coupling plates29- are held in position byclamp collars 32,-.loosening. of

which permitsthe coupling platesand the beams they carry to be adjusted longitudi- V m'sm for cooperation with the rack. bar

Lever 35 is of the bellcranktype and has a rearwardly extending arm 36 connected by a sprin pressure link 37 to the rear portion of plowlmam 30. At a point near its outer end the arm 36 of each lever 35 is provided with aneye to which-is coupled a rod 38 having its 50 ly from arm 36 of each lever 35. The arrangeforward end conneetedto an extension spring 39 engaging withv a hook 40 fixed on the axle casing. This spring connection with the tractor provides means for assisting the lift of the plow beam in the usual way.

i In order to. provide for parallel lift of both endsof theimplement beam, each brace-bar Q'Zhas mountedon it aboutniidway thereof (Fig. 2) a swinging arm or lever 41', theend of which is connectedby a link 4-2 to one end of the draft bar-28. The end of'eaeh lever 41 is also connected by a link bar 43 with apivot bracket 44 fixed to and extending downwardment is-such that vertical movement of arm 36 will communicate similar movement thrbughlink43 to lever 41 causing draft bar 28 and the forward ends of the beams 30 to be raised and lowered on the guide-ways 26 in 'unison with the rear of the beams, as indicated in broken lines on Fig. 2. The action of the lifting mechanism is to g vean lnitial parallel lift to thebeam until the top of the guide-way 26 is reached by bar. 28, after which the rear: of the beam may be given additional lift.

An important feature of the construction described is that the draft frame 15 extend. ing across the arch of the axle structure and connected to its lower portions acts to reinforce orbrace the axle and to assist it in with I standing the strains incident to the use of the 50 implements carried bythe draft frame. The

; adjnstability of the draft frame by means of the suspension links 22 provides means for varying the depth to which the plows or implements may be lowered by thelifting and lowerin mechanism,and provision of the paral- .lel 11ft allows the transverse draft bar and implement beams to be raised'a suflicient distance to clear obstructions'during transport while retaining a low point of draft applica-. tion to the plows during work. Afurther a'dvantage of. the structure is that the entire attachment or unit can be detached from the tractor by loosening bolts 19 of the pivot brackets 17 allowing the brackets to be slipped be removed on of bosses 14 and the unit to after unhooking springs 39. Optionally, the draft bracket 25 andbraces 27 together w th racks 33 and brackets 34 may be detached from the draft frame 15 leaving it in position 0n the tractor to serve as a drawbar for-other implements. I

WVhile the construction described includes preferred details of. construction, it will be evident to those skilled in the art that modifications thereof are possible without departu're from the scope of the invention as defined in the following claims. WVhat is claimed is:

1. The combination with a tractor having an upwardly arched axle structure atthe rear, of a rearwardly extending U-shaped frame extending across said arch and having its arms connected to the lower portions thereof,

a draft bracket fixed on the under side of each of said arms and formed'with a substanmounted on the forward port-ion of said.

frame and connected to the draft bar, and a link connecting the two levers for joint movement, whereby parallel movement is imparted to the ends ofthe implement beam. 2. The combination with a tractor hav ng 'an upwardly arched axlestructure at the rear, ofa rearwardly extending U-shaped frame extending across said arch and having its arms connected to the lower portions thereof, a draft bracket fixed on the under side of each of said, arms, an implement beam 3 pivotally connected to the draft brackets, and

means mounted on the U-shaped bar for lifting and lowering the implement beam.

3. The combination witha tractor having I an upwardly arched axle structure at the rear, of a rearwardly extending ll-shaped frame extending across said arch and having loo llO

its arms connected to the lower portions thereof, a draft bracket fixed on the under side of each of said arms and formed with a substantially vertical guidewvay, a transverse bar having its ends mounted on said guideways, a rearwardly extending implement beam secured to said bar, and means mounted onthe U-shaped frame for lifting and lowering the beam including means for siniultaneously lifting and lowering the bar on the guide-ways. r V

4. The combination with a tractor having an upwardly arched axle structure at the rear, of a i."earwardlyfextending U-shaped frame extending across the arch and having ts arms pivoted to the lower portions thereof, means for changing the angular adjustw mentof the U-shaped frame, an implement beam pivotally supported from the arms of said frame, and beam adjusting means mounted on the outer portion of said frame.

5. The combination with a tractor having an upwardly arched axle structure at the rear, of a rearwardly extending U-shaped frame extending across the arch and having its arms connected to the lower portions thereof, a plow beam supported beneath said U-shaped frame on vertically shiftable connections, and means-on said frame for moving the beam bodily in a vertical plane.

6. The combination with a tractor having an upwardly arched axle structure at the rear, of a draft frame mounted on the depending portions of the arched axle including a transversely extending member mounted for movement towards and from the ground, an implement beam secured to said member, and means on the frame for lifting and lowering said member and beam.

7. The combination with a tractor having an upwardly arched axle structure at the rear, of a rearwardly extending lat-shaped frame extending across the arched axle and secured to the lower portions thereof, a transverse draft bar extending between the arms of said frame and pivotally mounted thereon, implement beams mounted on said bar and adj ustable longitudinally thereof, and beam lifting and lowering means mounted on th ei-shaped frame and connected tovthe beams.

' 8. An attachment for tractors comprising a U-shaped draft frame the arms of which are provided with means for connection to the rear of a tractor with the frame projecting rearwardly therefrom, draft brackets formed with substantially vertical guide-ways depending from the forward portions of the arms of said draft frame, a draft bar extendingacross the arms and shiftably carried on said guide-ways, implement carryingbeams connected to said bar and extending beyond the frame, and means on the draft frame for bodily shifting sald bar and beams towards and from said frame.

9. An attachment for tractors comprising a draft frame provided with means for rigid connection to the rear of a tractor and adapted to project rcarwardly therefrom, depending draft brackets fixed to the forward portion of the draft frame, across the frame and having vertically shiftable connections with said brackets, implea draft bar extending draft brackets fixed to the forward portion of the. draft frame, implement carrying beams extending rearwardly below the draft frame and havmg vertically shlftable connections with said brackets, and means on the draft frame for bodily shifting each beam towards and from said frame.

11. Thecombination with a tractor, of an implement attachment therefor includingv a draft bar, means embodying vertical guides for supporting said bar on the tractor, implement carrying beams connected to the draft bar, adjusting means for each of the beams,

and means for movinganyone of said beams bodily and translationally a predetermined extent upon actuation of the respective beam adjusting means. I

12, The combinationwrth a tractor, of an implen'ient attachmenttherefor lIlOlUCllIlg. a transversely disposed draft bar, means embodylng vertical guides for slidably mounting said bar on the tractor, implement carrying beams connected to the draft bar and being.

said draft laterally adjustable thereon, an adjusting" mechanism for each of said beams, and means connectm g the draft bar an d ad usting mechanisms for moving any one of said beams bodily and translationally upon actuation ofithe respective beam adjusting mechanism,

13. The combination with a tractor of a draft frame'hingedly connected to the rear end of the tractor and projecting rearwardly. therefrom, means for angularly adjusting said frame on the tractor ina vertical direction,a transverse draft bar mounted-below the forward portion of said draft frame adjacent its connection tothe tractor, implement .beams connected to said bar by means permitting adjustment in themlirection of its length,

and means on the draftframe for lifting and lowering the beams.

In testimony vwhereof I ailix my signature.

I ,BERT n. BENJAMIN. 

